I am sure it was working in v5.* but it got lost in v6.*....at least I think it was there in v5
When I do the nesting, I quite often need to filter parts, mostly by type of material. As I said, I believe it once was part of the program but now missing.
In the nesting area, there still is a filter button. If you want to filter when you write CNC, you must close the job, then click the CNC button. Add the job to the dialog, then click on the filter button.